Yes - you have been ill informed if it's 4,700 Rand ... The print out I have in my hand states 55,430 Rand in a 152 and 69,880 Rand in a 172.
If you're there around March time then I may bump into you
Looks like a good club to me, I'm just a little dubious about the wind as PE known as 'The Winy City' and I fear this could delay my training.
Good luck.